SIMBAD references

1992JAVSO..21...42W - J. Am. Assoc. Variable star obs., 21, 42-47 (1992/June-0)

Three-color narrow-band photoelectric photometry of red variables.

WING R.F.

Abstract (from CDS):

A photometric system consisting of three near-infrared interference filters and designed for studies of red variable stars is described. It represents a simplification of the writer's eight-color system of classification photometry and is intended for use with small telescopes and inexpensive instrumentation. The three filters measure an infrared magnitude, a color index, and an index of TiO band strength, which indicates the spectral type. Measurements on this system should provide a valuable supplement to the visual light curves of red variable stars. A set of standard stars is given which will enable observers to reduce their measurements to a system of absolute fluxes. A procedure is described for deriving an index of TiO strength from the data and converting it to spectral type.

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Simbad objects: 15

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